1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spi/renesas,sh-msiof.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas MSIOF SPI controller
8
9maintainers:
10  - Geert Uytterhoeven <geert+renesas@glider.be>
11
12allOf:
13  - $ref: spi-controller.yaml#
14
15properties:
16  compatible:
17    oneOf:
18      - items:
19          - const: renesas,msiof-sh73a0     # SH-Mobile AG5
20          - const: renesas,sh-mobile-msiof  # generic SH-Mobile compatible
21                                            # device
22      - items:
23          - enum:
24              - renesas,msiof-r8a7742       # RZ/G1H
25              - renesas,msiof-r8a7743       # RZ/G1M
26              - renesas,msiof-r8a7744       # RZ/G1N
27              - renesas,msiof-r8a7745       # RZ/G1E
28              - renesas,msiof-r8a77470      # RZ/G1C
29              - renesas,msiof-r8a7790       # R-Car H2
30              - renesas,msiof-r8a7791       # R-Car M2-W
31              - renesas,msiof-r8a7792       # R-Car V2H
32              - renesas,msiof-r8a7793       # R-Car M2-N
33              - renesas,msiof-r8a7794       # R-Car E2
34          - const: renesas,rcar-gen2-msiof  # generic R-Car Gen2 and RZ/G1
35                                            # compatible device
36      - items:
37          - enum:
38              - renesas,msiof-r8a774a1      # RZ/G2M
39              - renesas,msiof-r8a774b1      # RZ/G2N
40              - renesas,msiof-r8a774c0      # RZ/G2E
41              - renesas,msiof-r8a774e1      # RZ/G2H
42              - renesas,msiof-r8a7795       # R-Car H3
43              - renesas,msiof-r8a7796       # R-Car M3-W
44              - renesas,msiof-r8a77965      # R-Car M3-N
45              - renesas,msiof-r8a77970      # R-Car V3M
46              - renesas,msiof-r8a77980      # R-Car V3H
47              - renesas,msiof-r8a77990      # R-Car E3
48              - renesas,msiof-r8a77995      # R-Car D3
49          - const: renesas,rcar-gen3-msiof  # generic R-Car Gen3 and RZ/G2
50                                            # compatible device
51      - items:
52          - const: renesas,sh-msiof  # deprecated
53
54  reg:
55    minItems: 1
56    maxItems: 2
57    oneOf:
58      - items:
59          - description: CPU and DMA engine registers
60      - items:
61          - description: CPU registers
62          - description: DMA engine registers
63
64  interrupts:
65    maxItems: 1
66
67  clocks:
68    maxItems: 1
69
70  num-cs:
71    description: |
72      Total number of chip selects (default is 1).
73      Up to 3 native chip selects are supported:
74        0: MSIOF_SYNC
75        1: MSIOF_SS1
76        2: MSIOF_SS2
77      Hardware limitations related to chip selects:
78        - Native chip selects are always deasserted in between transfers
79          that are part of the same message.  Use cs-gpios to work around
80          this.
81        - All slaves using native chip selects must use the same spi-cs-high
82          configuration.  Use cs-gpios to work around this.
83        - When using GPIO chip selects, at least one native chip select must
84          be left unused, as it will be driven anyway.
85    minimum: 1
86    maximum: 3
87    default: 1
88
89  dmas:
90    minItems: 2
91    maxItems: 4
92
93  dma-names:
94    minItems: 2
95    maxItems: 4
96    items:
97      enum: [ tx, rx ]
98
99  renesas,dtdl:
100    description: delay sync signal (setup) in transmit mode.
101    $ref: /schemas/types.yaml#/definitions/uint32
102    enum:
103      - 0        # no bit delay
104      - 50       # 0.5-clock-cycle delay
105      - 100      # 1-clock-cycle delay
106      - 150      # 1.5-clock-cycle delay
107      - 200      # 2-clock-cycle delay
108
109  renesas,syncdl:
110    description: delay sync signal (hold) in transmit mode
111    $ref: /schemas/types.yaml#/definitions/uint32
112    enum:
113      - 0        # no bit delay
114      - 50       # 0.5-clock-cycle delay
115      - 100      # 1-clock-cycle delay
116      - 150      # 1.5-clock-cycle delay
117      - 200      # 2-clock-cycle delay
118      - 300      # 3-clock-cycle delay
119
120  renesas,tx-fifo-size:
121    # deprecated for soctype-specific bindings
122    description: |
123      Override the default TX fifo size.  Unit is words.  Ignored if 0.
124    $ref: /schemas/types.yaml#/definitions/uint32
125    maxItems: 1
126    default: 64
127
128  renesas,rx-fifo-size:
129    # deprecated for soctype-specific bindings
130    description: |
131      Override the default RX fifo size.  Unit is words.  Ignored if 0.
132    $ref: /schemas/types.yaml#/definitions/uint32
133    maxItems: 1
134    default: 64
135
136required:
137  - compatible
138  - reg
139  - interrupts
140  - '#address-cells'
141  - '#size-cells'
142
143examples:
144  - |
145    #include <dt-bindings/clock/r8a7791-clock.h>
146    #include <dt-bindings/interrupt-controller/irq.h>
147
148    msiof0: spi@e6e20000 {
149        compatible = "renesas,msiof-r8a7791", "renesas,rcar-gen2-msiof";
150        reg = <0xe6e20000 0x0064>;
151        interrupts = <0 156 IRQ_TYPE_LEVEL_HIGH>;
152        clocks = <&mstp0_clks R8A7791_CLK_MSIOF0>;
153        dmas = <&dmac0 0x51>, <&dmac0 0x52>;
154        dma-names = "tx", "rx";
155        #address-cells = <1>;
156        #size-cells = <0>;
157    };
158